Switch Amplifier KFD2-SR2-Ex2.W

2-channel isolated barrier
24 V DC supply (Power Rail)
Dry contact or NAMUR inputs
Relay contact output
Line fault detection (LFD)
Reversible mode of operation
Up to SIL 2 (SC 3) acc. to IEC/EN 61508

Technical Data
Details
Informative Literature
Product Documentation
Design / Simulation
Approvals
Associated Products

Please note: All product-related documents, such as certificates, declarations of conformity, etc., which were issued prior to the conversion under the name Pepperl+Fuchs GmbH or Pepperl+Fuchs AG, also apply to Pepperl+Fuchs SE.

Download the complete datasheet as a PDF:

Datasheet excerpt: Technical data of KFD2-SR2-Ex2.W

General specifications
Signal type		Digital Input
Functional safety related parameters
Safety Integrity Level (SIL)		SIL 2
Systematic capability (SC)		SC 3
Supply
Connection		Power Rail or terminals 14+, 15-
Rated voltage		19 ... 30 V DC
Ripple		≤ 10 %
Rated current		≤ 50 mA
Power dissipation		≤ 1 W
Power consumption		≤ 1 W
Input
Connection side		field side
Connection		terminals 1+, 2+, 3-; 4+, 5+, 6-
Rated values		acc. to EN 60947-5-6 (NAMUR)
Open circuit voltage/short-circuit current		approx. 8 V DC / approx. 8 mA
Switching point/switching hysteresis		1.2 ... 2.1 mA / approx. 0.2 mA
Line fault detection		breakage I ≤ 0.1 mA , short-circuit I > 6 mA
Pulse/Pause ratio		min. 20 ms / min. 20 ms
Output
Connection side		control side
Connection		output I: terminals 7, 8, 9 ; output II: terminals 10, 11, 12
Output I, II		signal, relay
Contact loading		250 V AC/2 A/cos φ > 0.75; 126.5 V AC/4 A/cos φ > 0.75; 40 V DC/2 A resistive load
Minimum switch current		2 mA / 24 V DC
Energized/De-energized delay		approx. 20 ms / approx. 20 ms
Mechanical life		10⁷ switching cycles
Collective error message		Power Rail
Transfer characteristics
Switching frequency		≤ 10 Hz
Galvanic isolation
Input/Output		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V_eff
Input/power supply		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V_eff
Output/power supply		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V_eff
Output/Output		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V_eff
Indicators/settings
Display elements		LEDs
Control elements		DIP switch
Configuration		via DIP switches
Labeling		space for labeling at the front
Directive conformity
Electromagnetic compatibility
	Directive 2014/30/EU	EN 61326-1:2013 (industrial locations)
Low voltage
	Directive 2014/35/EU	EN 61010-1:2010+A1:2019+A1:2019/AC:2019
Conformity
Electromagnetic compatibility		NE 21:2017 , EN 61326-3-1:2017 , EN IEC 61326-3-2:2018
Degree of protection		IEC 60529:1989+A1:1999+A2:2013
Functional safety		IEC/EN 61508:2010
Input		EN 60947-5-6:2000
Ambient conditions
Ambient temperature		-40 ... 70 °C (-40 ... 158 °F)
Mechanical specifications
Degree of protection		IP20
Connection		screw terminals
Mass		approx. 150 g
Dimensions		20 x 119 x 115 mm (0.8 x 4.7 x 4.5 inch) (W x H x D) , housing type B2
	Height	119 mm
	Width	20 mm
	Depth	115 mm
Mounting		on 35 mm DIN mounting rail acc. to EN 60715:2001
Data for application in connection with hazardous areas
EU-type examination certificate		PTB 00 ATEX 2080
	Marking	II (1)G [Ex ia Ga] IIC II (1)D [Ex ia Da] IIIC I (M1) [Ex ia Ma] I
	Input	Ex ia
	Voltage	10.5 V
	Current	13 mA
	Power	34 mW (linear characteristic)
Supply
	Maximum safe voltage	253 V AC / 125 V DC (Attention! U_m is no rated voltage.)
Output
	Maximum safe voltage	253 V AC (Attention! The rated voltage can be lower.)
Fault indication output
	Maximum safe voltage	40 V DC (Attention! U_m is no rated voltage.)
Certificate		PF 08 CERT 0803
	Marking	II (3)G [Ex ic Gc] IIC
Input		Ex ic
	Voltage	10.5 V
	Current	13 mA
	Power	34 mW (linear characteristic)
Certificate		TÜV 99 ATEX 1493 X
	Marking	II 3G Ex ec nC IIC T4 Gc
Galvanic isolation
	Input/Output	safe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
	Input/power supply	safe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
Directive conformity
	Directive 2014/34/EU	EN IEC 60079-0:2018+AC:2020 , EN 60079-7:2015+A1:2018 , EN 60079-11:2012 , EN IEC 60079-15:2019
International approvals
FM approval
	FM certificate	FM19US0207X
	Control drawing	116-0035
UL approval		E106378
	Control drawing	116-0473 (cULus)
	Contact loading	250 V AC/2 A/cos φ > 0.75; 126.5 V AC/4 A/cos φ > 0.75; 30 V DC/2 A resistive load
IECEx approval
	IECEx certificate	IECEx PTB 11.0034 , IECEx TUN 19.0013X
	IECEx marking	[Ex ia Ga] IIC [Ex ia Da] IIIC [Ex ia Ma] I Ex ec nC IIC T4 Gc
General information
Supplementary information		Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com.

Classifications

System	Classcode
ECLASS 13.0	27210121
ECLASS 12.0	27210121
ECLASS 11.0	27210121
ECLASS 10.0.1	27210121
ECLASS 9.0	27210121
ECLASS 8.0	27210121
ECLASS 5.1	27210121
ETIM 9.0	EC001485
ETIM 8.0	EC001485
ETIM 7.0	EC001485
ETIM 6.0	EC001485
ETIM 5.0	EC001485
UNSPSC 12.1	32101514

Details: KFD2-SR2-Ex2.W

Function

This isolated barrier is used for intrinsic safety applications.

The device transfers digital signals from NAMUR sensors or dry contacts from the hazardous area to the non-hazardous area.

The proximity sensor or the mechanical contact controls the control side load for a relay contact output. The device output changes the state when the input signal changes the state.

Via switches the mode of operation can be reversed and the line fault detection can be switched off.

During a fault condition, the relay reverts to its de-energized state and the LEDs indicate the fault according to NAMUR NE 44.

If the device is operated via Power Rail, additionally a collective error message is available.

Informative Literature: KFD2-SR2-Ex2.W

Literature	Language	File Type	File Size
Application Report - Biological Cleaning of Wastwater and Secondary Sedimentation Stage	ENG	PDF	566 KB
Application Report - Energy Generation in Wastwater Treatment Plants	ENG	PDF	532 KB
Application Report - Generating Electricity in Coal-Fired Power Plants	ENG	PDF	412 KB
Application Report - Sand Trap and Preliminary Sedimentation Stage	ENG	PDF	448 KB
Application Report - Screening Systems in Sewage Treatment Plants	ENG	PDF	577 KB
Application Report - Sicherer Brennstofftransport in Kohlekraftwerken	ENG	PDF	391 KB
Application Report - Water Inlet in Wastewater Treatment Plants	ENG	PDF	526 KB

Product Documentation: KFD2-SR2-Ex2.W

Safety and Security Documentation	Language	File Type	File Size
Instruction manual	ENG	PDF	171 KB
Functional Safety Manual	ENG	PDF	1999 KB
Manuals
Manual	ENG	PDF	3685 KB

Design / Simulation: KFD2-SR2-Ex2.W

CAD	Language	File Type	File Size
CAD 3-D / CAD 3-D	ALL	STP	2510 KB
CAD Portal / CAD Portal	ALL	LINK	---
CAE
EPLAN macro EDZ / EPLAN Makro EDZ	ALL	EDZ	65 KB

Approvals: KFD2-SR2-Ex2.W

Certificates	Certificate No.	Language	File Type	File Size
Australia Test Safe	ANZEx 17.3006X	ALL	PDF	6788 KB
Brasil TUV Rheinland Brazil	TÜV 13.1125	ALL	PDF	1155 KB
China SITIIAS CCC Ex Certificate	2020322316001439 (Bintan)	ALL	PDF	1101 KB
DNV Marine	TAA00001WX	ALL	PDF	106 KB
Europe PTB ATEX Category (1) D ATEX Category (M1) ATEX Category (1) G	PTB 00 ATEX 2080	ALL	PDF	554 KB
Europe Pepperl+Fuchs ATEX Category 3 G	PF 08 CERT 0803	ALL	PDF	160 KB
Europe TUV II 3 G	TÜV 99 ATEX 1493X	ALL	PDF	2538 KB
India PESO (India) CCOE	A/P/HQ/KA/104/6069 (P574609)	ALL	PDF	101 KB
Japan TIIS	TC16024	ALL	PDF	2060 KB
Korea KOSHA	09-AV4BO-0222-1	ALL	PDF	346 KB
PTB IECEx Certificate of Conformity	IECEx PTB 11.0034	ALL	LINK	---
South Africa MASC	MASC S/22-8373X	ALL	PDF	713 KB
South Africa MASC	MASC MS/17-0863	ALL	PDF	730 KB
TUV Nord IECEx Certificate of Conformity	IECEx TUN 19.0013X	ALL	LINK	---
USA Canada UL Hazardous Location cULus UL E106378	CoC E106378 RepRef E106378-20200319	ALL	PDF	412 KB
USA FM	FM 19 US 0207X	ALL	PDF	350 KB
Ukraine SERTIS Ex	SC 21.0646 X	ALL	PDF	12351 KB
United Kingdom CML UK-Type Examination Certificate UKEX Category (1) D UKEX Category (1) G UKEX Category (M1)	CML 21UKEX2786	ALL	PDF	141 KB
Worldwide TUV Rheinland Functional Safety Certificate	No.:968/FSP 2015.01/21	ALL	PDF	620 KB
Control Drawings
Control drawing UL / Control drawing UL		ALL	PDF	132 KB
Control drawing FM / Control drawing FM		ALL	PDF	130 KB
Declaration of Conformity
EU Declaration of Conformity (P+F) / EU-Konformitäterklärung (P+F)	DOC-4636C	ALL	PDF	111 KB

Associated Products: KFD2-SR2-Ex2.W

Matching System Components

	KFD2-EB2 Power Feed Module
	Interface for Power Rail, Supply current ≤ 4 A, Replaceable fuse, Relay contact output, reversible, LED status indicationpa

	UPR-03 Universal Power Rail
	35 mm DIN mounting rail with 3-conductor insert, Provides DC supply voltage to all equipped K-System modules, Standard length 2 m (6 foot), simple to customize to application space, Eliminates daisy-chainspa

	UPR-03-S Universal Power Rail
	35 mm DIN mounting rail with 3-conductor insert, Provides DC supply voltage to all equipped K-System modules, Standard length 0.8 m (2.6 ft), simple to customize to application space, Eliminates daisy-chainspa

	UPR-03-M Universal Power Rail
	35 mm DIN mounting rail with 3-conductor insert, Provides DC supply voltage to all equipped K-System modules, Standard length 1.6 m (5 foot), simple to customize to application space, Eliminates daisy-chainspa

	K-DUCT-BU Profile Rail
	Cable trunking is integrated in the mounting profile, Safe spacious separation of safe and hazardous signals, No additional cable guides necessary, Standard length 1.8 m (5.8 ft), simple to customize to application space, With mounting aidspa

	K-DUCT-BU-UPR-03 Profile Rail
	Cable trunking with integrated Power Rail UPR-03, Safe spacious separation of safe and hazardous signals, No additional cable guides necessary, Provides DC supply voltage to all equipped K-System modules, Standard length 1.8 m (5.8 ft), simple to customize to application space, With end caps UPR-E, cover and mounting aidspa

Accessories

	F-NR3-Ex1 NAMUR Resistor Network
	1-channel, Dry contact input, For line fault detection (LFD)pa

	KF-ST-5GN Terminal Block
	3-pin screw terminal, For KF modules of K-System, Packaging unit: 5 pieces greenpa

	KF-ST-5BU Terminal Block
	3-pin screw terminal, For KF modules of K-System, Packaging unit: 5 pieces bluepa

	KF-CP Coding Pins
	Coding of K-System terminal blocks, Coding of LB/FB-System front sockets, Packaging unit: 20 x 6 coding pinspa

General Notes Relating to Pepperl+Fuchs Product Information

Quick Links

Selector for Safety Products

Choose from various selection criteria like safety integrity level, performance level, device function, and signal type and find the SIL/PL assessed device that you are looking for.

Pepperl+Fuchs SE
Lilienthalstraße 200
68307 Mannheim
Germany
info@de.pepperl-fuchs.com
phone +49 621 776-0

Pepperl+Fuchs is a leading developer and manufacturer of electronic sensors and components for the global automation market. Continuous innovation, enduring quality, and steady growth have been the foundation of our success for more than 70 years. Pepperl+Fuchs employs 6,300 people worldwide and has manufacturing facilities in Germany, USA, Singapore, Hungary, Indonesia and Vietnam, most of them ISO 9001 certified.